/*      $KAME: key_debug.c,v 1.26 2001/06/27 10:46:50 sakane Exp $      */

/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the project nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifdef _KERNEL
#include "opt_inet.h"
#include "opt_inet6.h"
#include "opt_ipsec.h"
#endif

#include <sys/param.h>
#ifdef _KERNEL
#include <sys/systm.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/mutex.h>
#include <sys/queue.h>
#endif
#include <sys/socket.h>

#include <net/vnet.h>

#include <netipsec/key_var.h>
#include <netipsec/key_debug.h>

#include <netinet/in.h>
#include <netipsec/ipsec.h>
#ifdef _KERNEL
#include <netipsec/keydb.h>
#include <netipsec/xform.h>
#endif

#ifndef _KERNEL
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <arpa/inet.h>
#endif /* !_KERNEL */

static void kdebug_sadb_prop(struct sadb_ext *);
static void kdebug_sadb_identity(struct sadb_ext *);
static void kdebug_sadb_supported(struct sadb_ext *);
static void kdebug_sadb_lifetime(struct sadb_ext *);
static void kdebug_sadb_sa(struct sadb_ext *);
static void kdebug_sadb_address(struct sadb_ext *);
static void kdebug_sadb_key(struct sadb_ext *);
static void kdebug_sadb_x_sa2(struct sadb_ext *);
static void kdebug_sadb_x_sa_replay(struct sadb_ext *);
static void kdebug_sadb_x_natt(struct sadb_ext *);

#ifndef _KERNEL
#define panic(fmt, ...) { printf(fmt, ## __VA_ARGS__); exit(-1); }
#endif

/* NOTE: host byte order */

static const char*
kdebug_sadb_type(uint8_t type)
{
#define SADB_NAME(n)    case SADB_ ## n: return (#n)

        switch (type) {
        SADB_NAME(RESERVED);
        SADB_NAME(GETSPI);
        SADB_NAME(UPDATE);
        SADB_NAME(ADD);
        SADB_NAME(DELETE);
        SADB_NAME(GET);
        SADB_NAME(ACQUIRE);
        SADB_NAME(REGISTER);
        SADB_NAME(EXPIRE);
        SADB_NAME(FLUSH);
        SADB_NAME(DUMP);
        SADB_NAME(X_PROMISC);
        SADB_NAME(X_PCHANGE);
        SADB_NAME(X_SPDUPDATE);
        SADB_NAME(X_SPDADD);
        SADB_NAME(X_SPDDELETE);
        SADB_NAME(X_SPDGET);
        SADB_NAME(X_SPDACQUIRE);
        SADB_NAME(X_SPDDUMP);
        SADB_NAME(X_SPDFLUSH);
        SADB_NAME(X_SPDSETIDX);
        SADB_NAME(X_SPDEXPIRE);
        SADB_NAME(X_SPDDELETE2);
        default:
                return ("UNKNOWN");
        }
#undef SADB_NAME
}

static const char*
kdebug_sadb_exttype(uint16_t type)
{
#define EXT_NAME(n)     case SADB_EXT_ ## n: return (#n)
#define X_NAME(n)       case SADB_X_EXT_ ## n: return (#n)

        switch (type) {
        EXT_NAME(RESERVED);
        EXT_NAME(SA);
        EXT_NAME(LIFETIME_CURRENT);
        EXT_NAME(LIFETIME_HARD);
        EXT_NAME(LIFETIME_SOFT);
        EXT_NAME(ADDRESS_SRC);
        EXT_NAME(ADDRESS_DST);
        EXT_NAME(ADDRESS_PROXY);
        EXT_NAME(KEY_AUTH);
        EXT_NAME(KEY_ENCRYPT);
        EXT_NAME(IDENTITY_SRC);
        EXT_NAME(IDENTITY_DST);
        EXT_NAME(SENSITIVITY);
        EXT_NAME(PROPOSAL);
        EXT_NAME(SUPPORTED_AUTH);
        EXT_NAME(SUPPORTED_ENCRYPT);
        EXT_NAME(SPIRANGE);
        X_NAME(KMPRIVATE);
        X_NAME(POLICY);
        X_NAME(SA2);
        X_NAME(NAT_T_TYPE);
        X_NAME(NAT_T_SPORT);
        X_NAME(NAT_T_DPORT);
        X_NAME(NAT_T_OAI);
        X_NAME(NAT_T_OAR);
        X_NAME(NAT_T_FRAG);
        X_NAME(SA_REPLAY);
        X_NAME(NEW_ADDRESS_SRC);
        X_NAME(NEW_ADDRESS_DST);
        X_NAME(LFT_CUR_SW_OFFL);
        X_NAME(LFT_CUR_HW_OFFL);
        default:
                return ("UNKNOWN");
        };
#undef EXT_NAME
#undef X_NAME
}

/* %%%: about struct sadb_msg */
void
kdebug_sadb(struct sadb_msg *base)
{
        struct sadb_ext *ext;
        int tlen, extlen;

        /* sanity check */
        if (base == NULL)
                panic("%s: NULL pointer was passed.\n", __func__);

        printf("sadb_msg{ version=%u type=%u(%s) errno=%u satype=%u\n",
            base->sadb_msg_version, base->sadb_msg_type,
            kdebug_sadb_type(base->sadb_msg_type),
            base->sadb_msg_errno, base->sadb_msg_satype);
        printf("  len=%u reserved=%u seq=%u pid=%u\n",
            base->sadb_msg_len, base->sadb_msg_reserved,
            base->sadb_msg_seq, base->sadb_msg_pid);

        tlen = PFKEY_UNUNIT64(base->sadb_msg_len) - sizeof(struct sadb_msg);
        ext = (struct sadb_ext *)((caddr_t)base + sizeof(struct sadb_msg));

        while (tlen > 0) {
                printf("sadb_ext{ len=%u type=%u(%s) }\n",
                    ext->sadb_ext_len, ext->sadb_ext_type,
                    kdebug_sadb_exttype(ext->sadb_ext_type));

                extlen = PFKEY_UNUNIT64(ext->sadb_ext_len);
                if (extlen == 0) {
                        printf("%s: invalid ext_len=0 was passed.\n", __func__);
                        return;
                }
                if (extlen > tlen) {
                        printf("%s: ext_len too big (%u > %u).\n",
                                __func__, ext->sadb_ext_len, tlen);
                        return;
                }

                switch (ext->sadb_ext_type) {
                case SADB_EXT_SA:
                        kdebug_sadb_sa(ext);
                        break;
                case SADB_EXT_LIFETIME_CURRENT:
                case SADB_EXT_LIFETIME_HARD:
                case SADB_EXT_LIFETIME_SOFT:
                        kdebug_sadb_lifetime(ext);
                        break;
                case SADB_EXT_ADDRESS_SRC:
                case SADB_EXT_ADDRESS_DST:
                case SADB_EXT_ADDRESS_PROXY:
                case SADB_X_EXT_NAT_T_OAI:
                case SADB_X_EXT_NAT_T_OAR:
                case SADB_X_EXT_NEW_ADDRESS_SRC:
                case SADB_X_EXT_NEW_ADDRESS_DST:
                        kdebug_sadb_address(ext);
                        break;
                case SADB_EXT_KEY_AUTH:
                case SADB_EXT_KEY_ENCRYPT:
                        kdebug_sadb_key(ext);
                        break;
                case SADB_EXT_IDENTITY_SRC:
                case SADB_EXT_IDENTITY_DST:
                        kdebug_sadb_identity(ext);
                        break;
                case SADB_EXT_SENSITIVITY:
                        break;
                case SADB_EXT_PROPOSAL:
                        kdebug_sadb_prop(ext);
                        break;
                case SADB_EXT_SUPPORTED_AUTH:
                case SADB_EXT_SUPPORTED_ENCRYPT:
                        kdebug_sadb_supported(ext);
                        break;
                case SADB_EXT_SPIRANGE:
                case SADB_X_EXT_KMPRIVATE:
                        break;
                case SADB_X_EXT_POLICY:
                        kdebug_sadb_x_policy(ext);
                        break;
                case SADB_X_EXT_SA2:
                        kdebug_sadb_x_sa2(ext);
                        break;
                case SADB_X_EXT_SA_REPLAY:
                        kdebug_sadb_x_sa_replay(ext);
                        break;
                case SADB_X_EXT_NAT_T_TYPE:
                case SADB_X_EXT_NAT_T_SPORT:
                case SADB_X_EXT_NAT_T_DPORT:
                        kdebug_sadb_x_natt(ext);
                        break;
                case SADB_X_EXT_LFT_CUR_SW_OFFL:
                case SADB_X_EXT_LFT_CUR_HW_OFFL:
                        kdebug_sadb_lifetime(ext);
                default:
                        printf("%s: invalid ext_type %u\n", __func__,
                            ext->sadb_ext_type);
                        return;
                }

                tlen -= extlen;
                ext = (struct sadb_ext *)((caddr_t)ext + extlen);
        }

        return;
}

static void
kdebug_sadb_prop(struct sadb_ext *ext)
{
        struct sadb_prop *prop = (struct sadb_prop *)ext;
        struct sadb_comb *comb;
        int len;

        /* sanity check */
        if (ext == NULL)
                panic("%s: NULL pointer was passed.\n", __func__);

        len = (PFKEY_UNUNIT64(prop->sadb_prop_len) - sizeof(*prop))
                / sizeof(*comb);
        comb = (struct sadb_comb *)(prop + 1);
        printf("sadb_prop{ replay=%u\n", prop->sadb_prop_replay);

        while (len--) {
                printf("sadb_comb{ auth=%u encrypt=%u "
                        "flags=0x%04x reserved=0x%08x\n",
                        comb->sadb_comb_auth, comb->sadb_comb_encrypt,
                        comb->sadb_comb_flags, comb->sadb_comb_reserved);

                printf("  auth_minbits=%u auth_maxbits=%u "
                        "encrypt_minbits=%u encrypt_maxbits=%u\n",
                        comb->sadb_comb_auth_minbits,
                        comb->sadb_comb_auth_maxbits,
                        comb->sadb_comb_encrypt_minbits,
                        comb->sadb_comb_encrypt_maxbits);

                printf("  soft_alloc=%u hard_alloc=%u "
                        "soft_bytes=%lu hard_bytes=%lu\n",
                        comb->sadb_comb_soft_allocations,
                        comb->sadb_comb_hard_allocations,
                        (unsigned long)comb->sadb_comb_soft_bytes,
                        (unsigned long)comb->sadb_comb_hard_bytes);

                printf("  soft_alloc=%lu hard_alloc=%lu "
                        "soft_bytes=%lu hard_bytes=%lu }\n",
                        (unsigned long)comb->sadb_comb_soft_addtime,
                        (unsigned long)comb->sadb_comb_hard_addtime,
                        (unsigned long)comb->sadb_comb_soft_usetime,
                        (unsigned long)comb->sadb_comb_hard_usetime);
                comb++;
        }
        printf("}\n");

        return;
}

static void
kdebug_sadb_identity(struct sadb_ext *ext)
{
        struct sadb_ident *id = (struct sadb_ident *)ext;
        int len;

        /* sanity check */
        if (ext == NULL)
                panic("%s: NULL pointer was passed.\n", __func__);

        len = PFKEY_UNUNIT64(id->sadb_ident_len) - sizeof(*id);
        printf("sadb_ident_%s{",
            id->sadb_ident_exttype == SADB_EXT_IDENTITY_SRC ? "src" : "dst");
        switch (id->sadb_ident_type) {
        default:
                printf(" type=%d id=%lu",
                        id->sadb_ident_type, (u_long)id->sadb_ident_id);
                if (len) {
#ifdef _KERNEL
                        ipsec_hexdump((caddr_t)(id + 1), len); /*XXX cast ?*/
#else
                        char *p, *ep;
                        printf("\n  str=\"");
                        p = (char *)(id + 1);
                        ep = p + len;
                        for (/*nothing*/; *p && p < ep; p++) {
                                if (isprint(*p))
                                        printf("%c", *p & 0xff);
                                else
                                        printf("\\%03o", *p & 0xff);
                        }
#endif
                        printf("\"");
                }
                break;
        }

        printf(" }\n");

        return;
}

static void
kdebug_sadb_supported(struct sadb_ext *ext)
{
        struct sadb_supported *sup = (struct sadb_supported *)ext;
        struct sadb_alg *alg;
        int len;

        /* sanity check */
        if (ext == NULL)
                panic("%s: NULL pointer was passed.\n", __func__);

        len = (PFKEY_UNUNIT64(sup->sadb_supported_len) - sizeof(*sup))
                / sizeof(*alg);
        alg = (struct sadb_alg *)(sup + 1);
        printf("sadb_sup{\n");
        while (len--) {
                printf("  { id=%d ivlen=%d min=%d max=%d }\n",
                        alg->sadb_alg_id, alg->sadb_alg_ivlen,
                        alg->sadb_alg_minbits, alg->sadb_alg_maxbits);
                alg++;
        }
        printf("}\n");

        return;
}

static void
kdebug_sadb_lifetime(struct sadb_ext *ext)
{
        struct sadb_lifetime *lft = (struct sadb_lifetime *)ext;

        /* sanity check */
        if (ext == NULL)
                panic("%s: NULL pointer was passed.\n", __func__);

        printf("sadb_lifetime{ alloc=%u, bytes=%u\n",
                lft->sadb_lifetime_allocations,
                (u_int32_t)lft->sadb_lifetime_bytes);
        printf("  addtime=%u, usetime=%u }\n",
                (u_int32_t)lft->sadb_lifetime_addtime,
                (u_int32_t)lft->sadb_lifetime_usetime);

        return;
}

static void
kdebug_sadb_sa(struct sadb_ext *ext)
{
        struct sadb_sa *sa = (struct sadb_sa *)ext;

        /* sanity check */
        if (ext == NULL)
                panic("%s: NULL pointer was passed.\n", __func__);

        printf("sadb_sa{ spi=%u replay=%u state=%u\n",
            (u_int32_t)ntohl(sa->sadb_sa_spi), sa->sadb_sa_replay,
            sa->sadb_sa_state);
        printf("  auth=%u encrypt=%u flags=0x%08x }\n",
            sa->sadb_sa_auth, sa->sadb_sa_encrypt, sa->sadb_sa_flags);

        return;
}

static void
kdebug_sadb_address(struct sadb_ext *ext)
{
        struct sadb_address *addr = (struct sadb_address *)ext;

        /* sanity check */
        if (ext == NULL)
                panic("%s: NULL pointer was passed.\n", __func__);

        printf("sadb_address{ proto=%u prefixlen=%u reserved=0x%02x%02x }\n",
            addr->sadb_address_proto, addr->sadb_address_prefixlen,
            ((u_char *)&addr->sadb_address_reserved)[0],
            ((u_char *)&addr->sadb_address_reserved)[1]);

        kdebug_sockaddr((struct sockaddr *)((caddr_t)ext + sizeof(*addr)));
}

static void
kdebug_sadb_key(struct sadb_ext *ext)
{
        struct sadb_key *key = (struct sadb_key *)ext;

        /* sanity check */
        if (ext == NULL)
                panic("%s: NULL pointer was passed.\n", __func__);

        printf("sadb_key{ bits=%u reserved=%u\n",
            key->sadb_key_bits, key->sadb_key_reserved);
        printf("  key=");

        /* sanity check 2 */
        if ((key->sadb_key_bits >> 3) >
                (PFKEY_UNUNIT64(key->sadb_key_len) - sizeof(struct sadb_key))) {
                printf("%s: key length mismatch, bit:%d len:%ld.\n",
                        __func__,
                        key->sadb_key_bits >> 3,
                        (long)PFKEY_UNUNIT64(key->sadb_key_len) - sizeof(struct sadb_key));
        }

        ipsec_hexdump((caddr_t)key + sizeof(struct sadb_key),
                      key->sadb_key_bits >> 3);
        printf(" }\n");
        return;
}

static void
kdebug_sadb_x_sa2(struct sadb_ext *ext)
{
        struct sadb_x_sa2 *sa2 = (struct sadb_x_sa2 *)ext;

        /* sanity check */
        if (ext == NULL)
                panic("%s: NULL pointer was passed.\n", __func__);

        printf("sadb_x_sa2{ mode=%u reqid=%u\n",
            sa2->sadb_x_sa2_mode, sa2->sadb_x_sa2_reqid);
        printf("  reserved1=%u reserved2=%u sequence=%u }\n",
            sa2->sadb_x_sa2_reserved1, sa2->sadb_x_sa2_reserved2,
            sa2->sadb_x_sa2_sequence);

        return;
}

static void
kdebug_sadb_x_sa_replay(struct sadb_ext *ext)
{
        struct sadb_x_sa_replay *replay;

        /* sanity check */
        if (ext == NULL)
                panic("%s: NULL pointer was passed.\n", __func__);

        replay = (struct sadb_x_sa_replay *)ext;
        printf("sadb_x_sa_replay{ replay=%u }\n",
            replay->sadb_x_sa_replay_replay);
}

static void
kdebug_sadb_x_natt(struct sadb_ext *ext)
{
        struct sadb_x_nat_t_type *type;
        struct sadb_x_nat_t_port *port;

        /* sanity check */
        if (ext == NULL)
                panic("%s: NULL pointer was passed.\n", __func__);

        if (ext->sadb_ext_type == SADB_X_EXT_NAT_T_TYPE) {
                type = (struct sadb_x_nat_t_type *)ext;
                printf("sadb_x_nat_t_type{ type=%u }\n",
                    type->sadb_x_nat_t_type_type);
        } else {
                port = (struct sadb_x_nat_t_port *)ext;
                printf("sadb_x_nat_t_port{ port=%u }\n",
                    ntohs(port->sadb_x_nat_t_port_port));
        }
}

void
kdebug_sadb_x_policy(struct sadb_ext *ext)
{
        struct sadb_x_policy *xpl = (struct sadb_x_policy *)ext;
        struct sockaddr *addr;

        /* sanity check */
        if (ext == NULL)
                panic("%s: NULL pointer was passed.\n", __func__);

        printf("sadb_x_policy{ type=%u dir=%u id=%x scope=%u %s=%u }\n",
                xpl->sadb_x_policy_type, xpl->sadb_x_policy_dir,
                xpl->sadb_x_policy_id, xpl->sadb_x_policy_scope,
                xpl->sadb_x_policy_scope == IPSEC_POLICYSCOPE_IFNET ?
                "ifindex": "priority", xpl->sadb_x_policy_priority);

        if (xpl->sadb_x_policy_type == IPSEC_POLICY_IPSEC) {
                int tlen;
                struct sadb_x_ipsecrequest *xisr;

                tlen = PFKEY_UNUNIT64(xpl->sadb_x_policy_len) - sizeof(*xpl);
                xisr = (struct sadb_x_ipsecrequest *)(xpl + 1);

                while (tlen > 0) {
                        printf(" { len=%u proto=%u mode=%u level=%u reqid=%u\n",
                                xisr->sadb_x_ipsecrequest_len,
                                xisr->sadb_x_ipsecrequest_proto,
                                xisr->sadb_x_ipsecrequest_mode,
                                xisr->sadb_x_ipsecrequest_level,
                                xisr->sadb_x_ipsecrequest_reqid);

                        if (xisr->sadb_x_ipsecrequest_len > sizeof(*xisr)) {
                                addr = (struct sockaddr *)(xisr + 1);
                                kdebug_sockaddr(addr);
                                addr = (struct sockaddr *)((caddr_t)addr
                                                        + addr->sa_len);
                                kdebug_sockaddr(addr);
                        }

                        printf(" }\n");

                        /* prevent infinite loop */
                        if (xisr->sadb_x_ipsecrequest_len <= 0) {
                                printf("%s: wrong policy struct.\n", __func__);
                                return;
                        }
                        /* prevent overflow */
                        if (xisr->sadb_x_ipsecrequest_len > tlen) {
                                printf("%s: invalid ipsec policy length "
                                        "(%u > %u)\n", __func__,
                                        xisr->sadb_x_ipsecrequest_len, tlen);
                                return;
                        }

                        tlen -= xisr->sadb_x_ipsecrequest_len;

                        xisr = (struct sadb_x_ipsecrequest *)((caddr_t)xisr
                                        + xisr->sadb_x_ipsecrequest_len);
                }

                if (tlen != 0)
                        panic("%s: wrong policy struct.\n", __func__);
        }

        return;
}

#ifdef _KERNEL
/* %%%: about SPD and SAD */
const char*
kdebug_secpolicy_state(u_int state)
{

        switch (state) {
        case IPSEC_SPSTATE_DEAD:
                return ("dead");
        case IPSEC_SPSTATE_LARVAL:
                return ("larval");
        case IPSEC_SPSTATE_ALIVE:
                return ("alive");
        case IPSEC_SPSTATE_PCB:
                return ("pcb");
        case IPSEC_SPSTATE_IFNET:
                return ("ifnet");
        }
        return ("unknown");
}

const char*
kdebug_secpolicy_policy(u_int policy)
{

        switch (policy) {
        case IPSEC_POLICY_DISCARD:
                return ("discard");
        case IPSEC_POLICY_NONE:
                return ("none");
        case IPSEC_POLICY_IPSEC:
                return ("ipsec");
        case IPSEC_POLICY_ENTRUST:
                return ("entrust");
        case IPSEC_POLICY_BYPASS:
                return ("bypass");
        }
        return ("unknown");
}

const char*
kdebug_secpolicyindex_dir(u_int dir)
{

        switch (dir) {
        case IPSEC_DIR_ANY:
                return ("any");
        case IPSEC_DIR_INBOUND:
                return ("in");
        case IPSEC_DIR_OUTBOUND:
                return ("out");
        }
        return ("unknown");
}

const char*
kdebug_ipsecrequest_level(u_int level)
{

        switch (level) {
        case IPSEC_LEVEL_DEFAULT:
                return ("default");
        case IPSEC_LEVEL_USE:
                return ("use");
        case IPSEC_LEVEL_REQUIRE:
                return ("require");
        case IPSEC_LEVEL_UNIQUE:
                return ("unique");
        }
        return ("unknown");
}

const char*
kdebug_secasindex_mode(u_int mode)
{

        switch (mode) {
        case IPSEC_MODE_ANY:
                return ("any");
        case IPSEC_MODE_TRANSPORT:
                return ("transport");
        case IPSEC_MODE_TUNNEL:
                return ("tunnel");
        case IPSEC_MODE_TCPMD5:
                return ("tcp-md5");
        }
        return ("unknown");
}

const char*
kdebug_secasv_state(u_int state)
{

        switch (state) {
        case SADB_SASTATE_LARVAL:
                return ("larval");
        case SADB_SASTATE_MATURE:
                return ("mature");
        case SADB_SASTATE_DYING:
                return ("dying");
        case SADB_SASTATE_DEAD:
                return ("dead");
        }
        return ("unknown");
}

static char*
kdebug_port2str(const struct sockaddr *sa, char *buf, size_t len)
{
        uint16_t port;

        IPSEC_ASSERT(sa != NULL, ("null sa"));
        switch (sa->sa_family) {
#ifdef INET
        case AF_INET:
                port = ntohs(((const struct sockaddr_in *)sa)->sin_port);
                break;
#endif
#ifdef INET6
        case AF_INET6:
                port = ntohs(((const struct sockaddr_in6 *)sa)->sin6_port);
                break;
#endif
        default:
                port = 0;
        }
        if (port == 0)
                return ("*");
        snprintf(buf, len, "%u", port);
        return (buf);
}

void
kdebug_secpolicy(struct secpolicy *sp)
{
        u_int idx;

        IPSEC_ASSERT(sp != NULL, ("null sp"));
        printf("SP { refcnt=%u id=%u priority=%u state=%s policy=%s\n",
            sp->refcnt, sp->id, sp->priority,
            kdebug_secpolicy_state(sp->state),
            kdebug_secpolicy_policy(sp->policy));
        kdebug_secpolicyindex(&sp->spidx, "  ");
        for (idx = 0; idx < sp->tcount; idx++) {
                printf("  req[%u]{ level=%s ", idx,
                    kdebug_ipsecrequest_level(sp->req[idx]->level));
                kdebug_secasindex(&sp->req[idx]->saidx, NULL);
                printf("  }\n");
        }
        printf("}\n");
}

void
kdebug_secpolicyindex(struct secpolicyindex *spidx, const char *indent)
{
        char buf[IPSEC_ADDRSTRLEN];

        IPSEC_ASSERT(spidx != NULL, ("null spidx"));
        if (indent != NULL)
                printf("%s", indent);
        printf("spidx { dir=%s ul_proto=",
            kdebug_secpolicyindex_dir(spidx->dir));
        if (spidx->ul_proto == IPSEC_ULPROTO_ANY)
                printf("* ");
        else
                printf("%u ", spidx->ul_proto);
        printf("%s/%u -> ", ipsec_address(&spidx->src, buf, sizeof(buf)),
            spidx->prefs);
        printf("%s/%u }\n", ipsec_address(&spidx->dst, buf, sizeof(buf)),
            spidx->prefd);
}

void
kdebug_secasindex(const struct secasindex *saidx, const char *indent)
{
        char buf[IPSEC_ADDRSTRLEN], port[6];

        IPSEC_ASSERT(saidx != NULL, ("null saidx"));
        if (indent != NULL)
                printf("%s", indent);
        printf("saidx { mode=%s proto=%u reqid=%u ",
            kdebug_secasindex_mode(saidx->mode), saidx->proto, saidx->reqid);
        printf("%s:%s -> ", ipsec_address(&saidx->src, buf, sizeof(buf)),
            kdebug_port2str(&saidx->src.sa, port, sizeof(port)));
        printf("%s:%s }\n", ipsec_address(&saidx->dst, buf, sizeof(buf)),
            kdebug_port2str(&saidx->dst.sa, port, sizeof(port)));
}

static void
kdebug_sec_lifetime(struct seclifetime *lft, const char *indent)
{

        IPSEC_ASSERT(lft != NULL, ("null lft"));
        if (indent != NULL)
                printf("%s", indent);
        printf("lifetime { alloc=%u, bytes=%ju addtime=%ju usetime=%ju }\n",
            lft->allocations, (uintmax_t)lft->bytes, (uintmax_t)lft->addtime,
            (uintmax_t)lft->usetime);
}

void
kdebug_secash(struct secashead *sah, const char *indent)
{

        IPSEC_ASSERT(sah != NULL, ("null sah"));
        if (indent != NULL)
                printf("%s", indent);
        printf("SAH { refcnt=%u state=%s\n", sah->refcnt,
            kdebug_secasv_state(sah->state));
        if (indent != NULL)
                printf("%s", indent);
        kdebug_secasindex(&sah->saidx, indent);
        if (indent != NULL)
                printf("%s", indent);
        printf("}\n");
}

#ifdef IPSEC_DEBUG
static void
kdebug_secreplay(struct secreplay *rpl)
{
        int len, l;

        SECREPLAY_LOCK(rpl);

        IPSEC_ASSERT(rpl != NULL, ("null rpl"));
        printf(" secreplay{ count=%lu bitmap_size=%u wsize=%u last=%lu",
            rpl->count, rpl->bitmap_size, rpl->wsize, rpl->last);

        if (rpl->bitmap == NULL) {
                printf("  }\n");
                SECREPLAY_UNLOCK(rpl);
                return;
        }

        printf("\n    bitmap { ");
        for (len = 0; len < rpl->bitmap_size*4; len++) {
                for (l = 7; l >= 0; l--)
                        printf("%u", (((rpl->bitmap)[len] >> l) & 1) ? 1 : 0);
        }
        printf("    }\n");
        SECREPLAY_UNLOCK(rpl);
}
#endif /* IPSEC_DEBUG */

static void
kdebug_secnatt(struct secnatt *natt)
{
        char buf[IPSEC_ADDRSTRLEN];

        IPSEC_ASSERT(natt != NULL, ("null natt"));
        printf("  natt{ sport=%u dport=%u ", ntohs(natt->sport),
            ntohs(natt->dport));
        if (natt->flags & IPSEC_NATT_F_OAI)
                printf("oai=%s ", ipsec_address(&natt->oai, buf, sizeof(buf)));
        if (natt->flags & IPSEC_NATT_F_OAR)
                printf("oar=%s ", ipsec_address(&natt->oar, buf, sizeof(buf)));
        printf("}\n");
}

void
kdebug_secasv(struct secasvar *sav)
{
        struct seclifetime lft_c;

        IPSEC_ASSERT(sav != NULL, ("null sav"));

        printf("SA { refcnt=%u spi=%u seq=%u pid=%u flags=0x%x state=%s\n",
            sav->refcnt, ntohl(sav->spi), sav->seq, (uint32_t)sav->pid,
            sav->flags, kdebug_secasv_state(sav->state));
        kdebug_secash(sav->sah, "  ");

        lft_c.addtime = sav->created;
        lft_c.allocations = (uint32_t)counter_u64_fetch(
            sav->lft_c_allocations);
        lft_c.bytes = counter_u64_fetch(sav->lft_c_bytes);
        lft_c.usetime = sav->firstused;
        kdebug_sec_lifetime(&lft_c, "  c_");
        if (sav->lft_h != NULL)
                kdebug_sec_lifetime(sav->lft_h, "  h_");
        if (sav->lft_s != NULL)
                kdebug_sec_lifetime(sav->lft_s, "  s_");

        if (sav->tdb_authalgxform != NULL)
                printf("  alg_auth=%s\n", sav->tdb_authalgxform->name);
        if (sav->key_auth != NULL)
                KEYDBG(DUMP,
                    kdebug_sadb_key((struct sadb_ext *)sav->key_auth));
        if (sav->tdb_encalgxform != NULL)
                printf("  alg_enc=%s\n", sav->tdb_encalgxform->name);
        if (sav->key_enc != NULL)
                KEYDBG(DUMP,
                    kdebug_sadb_key((struct sadb_ext *)sav->key_enc));
        if (sav->natt != NULL)
                kdebug_secnatt(sav->natt);
        if (sav->replay != NULL) {
                KEYDBG(DUMP,
                    SECASVAR_RLOCK_TRACKER;

                    SECASVAR_RLOCK(sav);
                    kdebug_secreplay(sav->replay);
                    SECASVAR_RUNLOCK(sav));
        }
        printf("}\n");
}

void
kdebug_mbufhdr(const struct mbuf *m)
{
        /* sanity check */
        if (m == NULL)
                return;

        printf("mbuf(%p){ m_next:%p m_nextpkt:%p m_data:%p "
               "m_len:%d m_type:0x%02x m_flags:0x%02x }\n",
                m, m->m_next, m->m_nextpkt, m->m_data,
                m->m_len, m->m_type, m->m_flags);

        if (m->m_flags & M_PKTHDR) {
                printf("  m_pkthdr{ len:%d rcvif:%p }\n",
                    m->m_pkthdr.len, m->m_pkthdr.rcvif);
        }

        if (m->m_flags & M_EXT) {
                printf("  m_ext{ ext_buf:%p ext_free:%p "
                       "ext_size:%u ext_cnt:%p }\n",
                        m->m_ext.ext_buf, m->m_ext.ext_free,
                        m->m_ext.ext_size, m->m_ext.ext_cnt);
        }

        return;
}

void
kdebug_mbuf(const struct mbuf *m0)
{
        const struct mbuf *m = m0;
        int i;

        for (; m; m = m->m_next) {
                kdebug_mbufhdr(m);
                printf("  m_data:\n");
                for (i = 0; i < m->m_len; i++) {
                        if (i && i % 32 == 0)
                                printf("\n");
                        if (i % 4 == 0)
                                printf(" ");
                        printf("%02x", mtod(m, const u_char *)[i]);
                }
                printf("\n");
        }

        return;
}

/* Return a printable string for the address. */
char *
ipsec_address(const union sockaddr_union* sa, char *buf, socklen_t size)
{

        switch (sa->sa.sa_family) {
#ifdef INET
        case AF_INET:
                return (inet_ntop(AF_INET, &sa->sin.sin_addr, buf, size));
#endif /* INET */
#ifdef INET6
        case AF_INET6:
                if (IN6_IS_SCOPE_LINKLOCAL(&sa->sin6.sin6_addr)) {
                        snprintf(buf, size, "%s%%%u", inet_ntop(AF_INET6,
                            &sa->sin6.sin6_addr, buf, size),
                            sa->sin6.sin6_scope_id);
                        return (buf);
                } else
                        return (inet_ntop(AF_INET6, &sa->sin6.sin6_addr,
                            buf, size));
#endif /* INET6 */
        case 0:
                return ("*");
        default:
                return ("(unknown address family)");
        }
}

char *
ipsec_sa2str(struct secasvar *sav, char *buf, size_t size)
{
        char sbuf[IPSEC_ADDRSTRLEN], dbuf[IPSEC_ADDRSTRLEN];

        snprintf(buf, size, "SA(SPI=%08lx src=%s dst=%s)",
            (u_long)ntohl(sav->spi),
            ipsec_address(&sav->sah->saidx.src, sbuf, sizeof(sbuf)),
            ipsec_address(&sav->sah->saidx.dst, dbuf, sizeof(dbuf)));
        return (buf);
}

#endif /* _KERNEL */

void
kdebug_sockaddr(struct sockaddr *addr)
{
        char buf[IPSEC_ADDRSTRLEN];

        /* sanity check */
        if (addr == NULL)
                panic("%s: NULL pointer was passed.\n", __func__);

        switch (addr->sa_family) {
#ifdef INET
        case AF_INET: {
                struct sockaddr_in *sin;

                sin = (struct sockaddr_in *)addr;
                inet_ntop(AF_INET, &sin->sin_addr, buf, sizeof(buf));
                break;
        }
#endif
#ifdef INET6
        case AF_INET6: {
                struct sockaddr_in6 *sin6;

                sin6 = (struct sockaddr_in6 *)addr;
                if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
                        snprintf(buf, sizeof(buf), "%s%%%u",
                            inet_ntop(AF_INET6, &sin6->sin6_addr, buf,
                            sizeof(buf)), sin6->sin6_scope_id);
                } else
                        inet_ntop(AF_INET6, &sin6->sin6_addr, buf,
                            sizeof(buf));
                break;
        }
#endif
        default:
                sprintf(buf, "unknown");
        }
        printf("sockaddr{ len=%u family=%u addr=%s }\n", addr->sa_len,
            addr->sa_family, buf);
}

void
ipsec_bindump(caddr_t buf, int len)
{
        int i;

        for (i = 0; i < len; i++)
                printf("%c", (unsigned char)buf[i]);

        return;
}

void
ipsec_hexdump(caddr_t buf, int len)
{
        int i;

        for (i = 0; i < len; i++) {
                if (i != 0 && i % 32 == 0) printf("\n");
                if (i % 4 == 0) printf(" ");
                printf("%02x", (unsigned char)buf[i]);
        }
#if 0
        if (i % 32 != 0) printf("\n");
#endif

        return;
}